English: tar spot; tar spot of maize; Spanish: mancha de asfalto; mancha negra; mancha negra del maiz; French: tache noire du mais. El “complejo mancha de asfalto” del maíz, su distribución geográfica, requisitos Etiología y manejo de la mancha de asfalto (Phyllachora maydis Maubl.). mancha de asfalto del maiz . Malaguti, G. Subero, L.J.. Access the full text: NOT AVAILABLE. Lookup the document at: google-logo. mancha de asfalto del.
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The precision reproducibility or variation associated with an estimationestimated by the coefficient of determination r 2 and by the variability of the absolute errors Nutter et al. Generate a print friendly version containing only the sections you need. Greater losses were suggested to be possible where environmental conditions are more favourable or cultivars grown are more susceptible. Among the methods of measurement for the intensity of a disease, the use of diagrammatic logarithmic scales is the most widely used.
Intensifican en Villa Clara control de hongos en el maíz
Invasion of the host and development of the fungus. Title Symptoms Caption ‘Fisheye’ spots developed around tarspots on Zea mays. Foliar fungal diseases http: No species of Phyllachora are reported as seedborne Richardson, Accidental Introduction This has not been reported, but the natural means of dispersal may not be sufficient astalto explain spread between environmentally favourable areas of maize cultivation at higher elevations in South America or to islands in the Caribbean.
Design of the diagrammatic logarithmic scale. Title Perithecia Caption Perithecia jancha cross section of tarspot lesion on Zea mays.
Editorial Cientifico-Tecnica, pp. Plants located up to feet away from a source of inoculum dn infected in Puerto Rico Liu, Given the growing importance, standardized methods are required to quantify disease that mauz for reproducible epidemiological methods. Tropical Pest Management It is the only species reported on Zea and is restricted to Zea Parbery, ; The means of persistence and sources of initial inoculum other than maize [ Zea mays ] need to be determined.
They were unable to isolate M.
Summa Phytopathologica 34 4: The higher optimum for the second pathogen may be a factor in its later appearance, following P.
Cryptogamic Botany, 2 Ascospores-their liberation and germination.
The precision levels observed indicate that the first contact with the scale is appropriate for successful implementation in the evaluation of TSC. Taxonomic Tree Top of page Domain: Elaboration and validation of diagrammatic key to evaluate white rust severity in Chrysanthemum. Plant Pathology, 44 3: Known primarily from the cooler and higher elevations Malaguti and Subero, ; Bajet et al.
Other types of losses may include reductions in quality of grain, plants used for feed, or husks used for food wrapping Bajet et al. Control Cultural Control and Sanitary Measures Measures to reduce the initial inoculum for a new crop would depend on the source of that inoculum and cultivation practices.
Where maize [ Zea mays ] is grown continuously in the vicinity, efforts at sanitation are not likely to be effective. In Mexico, disease is most severe at elevations of m and in the cooler months from November to April, at lower altitudes Bajet et al.
mancha de asfalto del maiz 
Requisitos ambientales para el desarrollo del “complejo mancha de asfalto” que ataca al mais en Mexico. The diagrammatic logarithmic scale for the TSC proposed in this study represents a standardized quantification method for the ne that will help obtain easily reproducible results, due to its high levels of accuracy and precision among several evaluators, therefore, it can be used as supporting material for different kinds of studies related to the quantification of the severity of TSC.
This other pathogen may be present as an endophyte Muller and Samuels, ; Bajet et al. In regards to this, Michereff et al. The overestimation of the severity levels using logarithmic scales has been common in several pathosystem.
Ciencia y técnica
Transactions of the Illinois State Academy of Science, Parbery a suggested rain splash as a dispersing agent for Phyllachora on grasses in Australia. More significant damage to leaves and yield is caused by the fungus Monographella maydis whose infec Undiagnosed fungus, maize – Guatemala Fungi of Trinidad and Tobago.
When conditions favour disease, leaves may zsfalto fully dead in days.
Physiology and Phenology Phyllachora species are generally obligate parasites, and cannot be cultured on the usual laboratory media Parbery, b. American Phytopathological Society,